Network-Layer
September 5, 2024Network-Layer
September 5, 2024Network-Layer
| Question 21 |
Which transport class should be used with a perfect network layer ?
| TP0 and TP2 | |
| TP1 and TP3 | |
| TP0, TP1, TP3 | |
| TP0, TP1, TP2, TP3, TP4 |
Question 21 Explanation:
Five transport layer protocols exist in the OSI suite, ranging from Transport Protocol Class 0 through Transport Protocol Class 4 (TP0, TP1, TP2, TP3 & TP4).
→ TP0 to TP3 work only with connection-oriented communications, in which a session connection must be established before any data is sent.
→ TP4 also works with both connection-oriented and connectionless communications. Transport Protocol Class 0 (TP0) performs segmentation (fragmentation) and reassembly functions. TP0 discerns the size of the smallest maximum protocol data unit (PDU) supported by any of the underlying networks, and segments the packets accordingly. The packet segments are reassembled at the receiver.
Transport Protocol Class 2 (TP2) performs segmentation and reassembly, as well as multiplexing and demultiplexing of data streams over a single virtual circuit.
Transport Protocol Class 4 (TP4) offers error recovery, performs segmentation and reassembly, and supplies multiplexing and demultiplexing of data streams over a single virtual circuit. TP4
sequences PDUs and retransmits them or reinitiates the connection if an excessive number are unacknowledged. TP4 provides reliable transport service and functions with either
connection-oriented or connectionless network service. TP4 is the most commonly used of all the OSI transport protocols.
→ TP0 to TP3 work only with connection-oriented communications, in which a session connection must be established before any data is sent.
→ TP4 also works with both connection-oriented and connectionless communications. Transport Protocol Class 0 (TP0) performs segmentation (fragmentation) and reassembly functions. TP0 discerns the size of the smallest maximum protocol data unit (PDU) supported by any of the underlying networks, and segments the packets accordingly. The packet segments are reassembled at the receiver.
Transport Protocol Class 2 (TP2) performs segmentation and reassembly, as well as multiplexing and demultiplexing of data streams over a single virtual circuit.
Transport Protocol Class 4 (TP4) offers error recovery, performs segmentation and reassembly, and supplies multiplexing and demultiplexing of data streams over a single virtual circuit. TP4
sequences PDUs and retransmits them or reinitiates the connection if an excessive number are unacknowledged. TP4 provides reliable transport service and functions with either
connection-oriented or connectionless network service. TP4 is the most commonly used of all the OSI transport protocols.
Correct Answer: A
Question 21 Explanation:
Five transport layer protocols exist in the OSI suite, ranging from Transport Protocol Class 0 through Transport Protocol Class 4 (TP0, TP1, TP2, TP3 & TP4).
→ TP0 to TP3 work only with connection-oriented communications, in which a session connection must be established before any data is sent.
→ TP4 also works with both connection-oriented and connectionless communications. Transport Protocol Class 0 (TP0) performs segmentation (fragmentation) and reassembly functions. TP0 discerns the size of the smallest maximum protocol data unit (PDU) supported by any of the underlying networks, and segments the packets accordingly. The packet segments are reassembled at the receiver.
Transport Protocol Class 2 (TP2) performs segmentation and reassembly, as well as multiplexing and demultiplexing of data streams over a single virtual circuit.
Transport Protocol Class 4 (TP4) offers error recovery, performs segmentation and reassembly, and supplies multiplexing and demultiplexing of data streams over a single virtual circuit. TP4
sequences PDUs and retransmits them or reinitiates the connection if an excessive number are unacknowledged. TP4 provides reliable transport service and functions with either
connection-oriented or connectionless network service. TP4 is the most commonly used of all the OSI transport protocols.
→ TP0 to TP3 work only with connection-oriented communications, in which a session connection must be established before any data is sent.
→ TP4 also works with both connection-oriented and connectionless communications. Transport Protocol Class 0 (TP0) performs segmentation (fragmentation) and reassembly functions. TP0 discerns the size of the smallest maximum protocol data unit (PDU) supported by any of the underlying networks, and segments the packets accordingly. The packet segments are reassembled at the receiver.
Transport Protocol Class 2 (TP2) performs segmentation and reassembly, as well as multiplexing and demultiplexing of data streams over a single virtual circuit.
Transport Protocol Class 4 (TP4) offers error recovery, performs segmentation and reassembly, and supplies multiplexing and demultiplexing of data streams over a single virtual circuit. TP4
sequences PDUs and retransmits them or reinitiates the connection if an excessive number are unacknowledged. TP4 provides reliable transport service and functions with either
connection-oriented or connectionless network service. TP4 is the most commonly used of all the OSI transport protocols.
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